title: Tuning interactions between zeolite and supported metal by physical-sputtering to achieve higher catalytic performances.
abstract: To substitute for petroleum, Fischer-Tropsch synthesis (FTS) is an environmentally benign process to produce synthetic diesel (n-paraffin) from syngas. Industrially, the synthetic gasoline (iso-paraffin) can be produced with a FTS process followed by isomerization and hydrocracking processes over solid-acid catalysts. Herein, we demonstrate a cobalt nano-catalyst synthesized by physical-sputtering method that the metallic cobalt nano-particles homogeneously disperse on the H-ZSM5 zeolite support with weak Metal-Support Interactions (MSI). This catalyst performed the high gasoline-range iso-paraffin productivity through the combined FTS, isomerization and hydrocracking reactions. The weak MSI results in the easy reducibility of the cobalt nano-particles; the high cobalt dispersion accelerates n-paraffin diffusion to the neighboring acidic sites on the H-ZSM5 support for isomerization and hydrocracking. Both factors guarantee its high CO conversion and iso-paraffin selectivity. This physical-sputtering technique to synthesize the supported metallic nano-catalyst is a promising way to solve the critical problems caused by strong MSI for various processes.
authors.affiliation: 1] School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072, PR China [2] Tianjin Key Laboratory of Applied Catalysis Science & Technology, 300072, PR China [3] The Synergetic Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, PR China.
authors.forename: Xin-Gang
authors.initials: XG
authors.lastname: Li
authors.forename: Cheng
authors.initials: C
authors.lastname: Liu
authors.forename: Jian
authors.initials: J
authors.lastname: Sun
authors.forename: Hui
authors.initials: H
authors.lastname: Xian
authors.forename: Yi-Sheng
authors.initials: YS
authors.lastname: Tan
authors.forename: Zheng
authors.initials: Z
authors.lastname: Jiang
authors.forename: Akira
authors.initials: A
authors.lastname: Taguchi
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Inoue
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Yoneyama
authors.forename: Takayuki
authors.initials: T
authors.lastname: Abe
authors.forename: Noritatsu
authors.initials: N
authors.lastname: Tsubaki